Bad temper after waking up

I'm so angry cos I promised myself I was gonna take a nap,after that I will watch my favourite drama while eating instant noodles,but it turned out that I woke up after at 6:30 pm when the drama already finish maa...I have bad temper,and I was planning to eat instant noodles earlier so I my stomache won't get err..big..I end up eating it like 7 o'clock at night,man..where did I get those bad temper from?